Map of routes for a Pacific railroad
Relief shown by hachures and spot heights. Appears in the U.S. War Dept.'s Report of the Secretary of War on the several Pacific railroad explorations, 1855. "This is a hurried compilation of all the authentic surveys and is designed to exhibit the relations of the different routes to each other. An elaborate map on scale of 1:3,000,000 is being compiled and is in an ...